Haxe Forum > I just implemented continuation

• 杨博 Aug 13 at 07:35

  Hello everyone, I am glad to introduce my work this weekend: continuation for Haxe.

  The project is at https://github.com/Atry/haxe-continuation.

  Usage

  
  If a function's last parameter is a callback function, it is an asynchronous function. haxe-continuation enable you to write an synchronous function in continuation-passing style (CPS).

  You can use Continuation.cpsFunction to write such a CPS asynchronous function. In Continuation.cpsFunction, async is a keyword to invoke other async functions. In async, You need not to explicitly pass a callback function. Instead, the code after async will be captured as the callback function used by the callee.

  import com.dongxiguo.continuation.Continuation;
  class Sample 
  {
    static var sleepOneSecond = callback(haxe.Timer.delay, _, 1000);
    public static function main() 
    {
      Continuation.cpsFunction(function asyncTest():Void
      {
        trace("Start continuation.");
        for (i in 0...10)
        {
          async(sleepOneSecond);
          trace("Run sleepOneSecond " + i + " times.");
        }
        trace("Continuation is done.");
      });
      asyncTest(function()
      {
        trace("Handler without continuation.");
      });
    }
  }

  
  See https://github.com/Atry/haxe-continuation/blob/master/tests/TestContinuation.hx for more samples.

  Installation

  I have upload to haxelib. To install, type following command in shell:
  

  haxelib install continuation

  
  I guess the NodeJS guys may interest on my project.

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